Fix comment.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75471 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index e45fa55..9bab926 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -732,7 +732,7 @@
   if (Ty.isNull())
     return llvm::DIType();
   
-  // Check to see if the compile unit already has created this type.
+  // Check TypeCache first.
   llvm::DIType &Slot = TypeCache[Ty.getAsOpaquePtr()];
   if (!Slot.isNull()) return Slot;